204066406 has 4 divisors (see below), whose sum is σ = 306099612. Its totient is φ = 102033202.

The previous prime is 204066371. The next prime is 204066407. The reversal of 204066406 is 604660402.

204066406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×204066406³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204066407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51016600 + ... + 51016603.

It is an arithmetic number, because the mean of its divisors is an integer number (76524903).

Almost surely, 2^204066406 is an apocalyptic number.

204066406 is a deficient number, since it is larger than the sum of its proper divisors (102033206).

204066406 is a wasteful number, since it uses less digits than its factorization.

204066406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102033205.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 204066406 is about 14285.1813429162. The cubic root of 204066406 is about 588.7404000100.

The spelling of 204066406 in words is "two hundred four million, sixty-six thousand, four hundred six".